What is considered the best anti-fatigue measure?

Sleep is widely regarded as the best anti-fatigue measure due to its critical role in physical and mental recovery. It enables the body to repair itself, consolidates memories, and promotes overall cognitive function, which are essential for optimal performance in high-stress and high-responsibility occupations like aviation. Adequate sleep helps to regulate mood, decrease stress, and enhance alertness, all of which are vital for crew members who must maintain high levels of focus and decision-making capabilities throughout their duties.

While exercise, nutrition, and hydration are also important for overall health and can influence energy levels, they are often not sufficient alone to combat the effects of fatigue as effectively as sleep does. Sleep provides a restorative function that aids in recovery, whereas the benefits derived from exercise, good nutrition, and hydration can support ongoing function but typically do not replace the need for sufficient restorative sleep.